There's even an IRFCA Convention going on even as I'm writing this post, and someone is liveblogging it and posting pictures.

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Should have posted this link earlier; I learned about IRFCA from Prof. Dheeraj Sanghi of IIT-K (currently Director of the Lakshmi N. Mittal Institute of Information Technology, LNMIIT, Jaipur) when he was at IISc last month. And, yes, he's a card-carrying IRFCA member, and was among those who organized IRFCA's second third convention in Kanpur [See Prof. Sanghi's comment below].

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Comments:

Thanks for mentioning IRFCA. Just a minor correction. Kanpur convention was the third one. Our fifth convention just got over, and it was, as usual, a lot of fun. National Railway Museum at Chanakyapuri, New Delhi, was the perfect setting for railfans to meet.